Pneumatic horse-collar.



No. 816,761. PATENTED APR. 3, 1906.

1. J. THOMSEN.

PNEUMATIC HORSE COLLAR.

APPLIOATION FILED AUG.2Z.1905.

. I I I 5 nucwloz vihwaaao 6 MW L v W W v v atk mey/z INGEBERT J.THOMSEN, OF ltlINDEN, NEBRASKA.

Pneuraario HORSE-COLLAR.

Specification of Letters Patent.

Patented April 3, 1906.

Application filed August 22, 1905. Serial No. 275,267-

To all whom, it may concern:

Be it known that I, I eEBERT J. THOMSEN, a citizen of the United States,,residing at Minden, in the county of Kearney and State of Nebraska,have invented certain new and useful Improvements in Pneumatic Horse-Collars, of which the following is a specification.

- This invention relates to pneumatic horsecollars.

Two forms of neumatichorse-collars have been introduce on the market,one having two separate air-pads and the other formed of but one pad.The first form has never been used to any extent, because it has beenfound 'almost impossible to inflate the pads so that the pressure willbe square on each shoulder, that an escape chair from one pad laces thestrain on one shoulder, and for the further reason that mucln time andlabor are consumed by having to inflate the pads se arately. The secondform isobjectiona le for the reason that when any extra pressure is puton one pad the air rushes to the opposite pad and upon the pressurebeing lessened rushes back again, thus suddenly shifting the strain fromone side to the other, which is very tiresome to the horse.

The object of this invention is to rovide a pneumatic horsec'ollar whichis a apted'to equalize the strain on the neck and shoulders of theanimal by the radual transfer of from one pad to the ot er.

With this and other objects in view the present invention consists inthe combination and arrangement of parts, as will be air ' hereinaftermore fully described, shown in the accompanyin drawings, andparticularly pointed out in the appended claims, it being understoodthat changes in theform,

proportion, size, and minor details may be ma e within the scope of theclaims without departing from the spirit or sacrificing any of theadvantages of the invention.

In the drawings, Figure 1 is a view of my improved horse-collar. Fig. 2is a view of the pneumatic pads. Fig. 3 is a cross'section on line 3 3of F ig. 1 looking in the direction of the arrows. Fig. 4 is across-section of (ithe restriction-passage between the two a s. PReferring to the drawings, in which like numerals of reference designatecorrespondform and size of the usual straw-stuffed pads.

These inflatable pads 5 are connected to each.

other at their bottom ends by a small metal tube 6, which is held inplace by a larger tube 7, which securely holds the ends of pads 5against the outer periphery of tube 6. To

, make the joint more secure, annular ribs 8 are provided on the ends oftube 6,'which embed themselves into the material of the pads and formair-tight joints in the forward wall of one of the pads is provided avalve 9, adapted to receive the connection of the pump by which the padsare inflated. This valve 9 is accessible from the outside through anaperture 10 in casing 4.

11 indicates the ordinary form of strip tastening for the. collar.

It will be observed that when in use the pressure will under normalconditions be equal in both pads. Any extra pressure on one padwillcause the airto slowly escape through the restricted aperture intube 6 to the opposite pad, thereby equalizing the pres sure without thesudden shifting of strain,

which is so fatiguing to the animal.

A needle-valve 12 regulates the flow of air from one pad to the otherthrough the r'estricted air-passage 6.

Having thus described my invention, What pneumatic pads connected by arestricted pads secured to the under side thereof, a restrlctedair-passage connecting said ads, a

valved aperture in one of said pads t rou h which the air is introduced,and a need evalve controlling thepassage of air through said restrictedair-passage.

secured to the under side thereof, a pipe In testimony whereof I'affixmysignature pipe, a needle-valve mounted in said casing Witnesses:

g; Y swam 4. In a pneumatic horse-collar; the combiinone oisaid padsthrough which air is intro-- nation with a stiff portion, of pneumaticpads duoed. 10

forming a restricted air-passage connecting in presence of twowitnesses. said pads ametallio casing surrounding said INGEBERT J.THUMSEN.

and controlling the flow of air through said; RosooE J. SLATEli.restricted air-passage and a valved aperture I ART Roams;

